I think I have solved my problem (just after I posted, lol). So I double checked my clip settings in the browser, and yes they were 1920×1080 (and yes, I had a brain fart and realized that full HD is in fact 1920×1080 NOT 1440×1080 – sigh). Frame rate was 23.98. However, yes, my sequence had automagically been created to 1440×1080 & 25p. How you ask? B/c my Easy Setup was set to that and when I dragged and dropped the first clip into that timeline, I must have said no. Oh, how you learn the hard way. So I went back and setup some new Easy Setups and set the default to 1920×1080 24p ProRes.
Now, is there any easy way to keep the edits of the clips I made in the first sequence but put them in a new sequence that has the proper settings?